To provide a brush capable of surely preventing a bristle tuft from falling from a bristle tuft holding member even when the adhesion of an adhesive to the bristle tuft holding member lowers by use for a long period of time.

The brush 10 includes a horizontally long roughly rectangular thick handle 11 and a plurality of small brush parts 15 raised on the bottom surface of the handle 11. The small brush part 15 includes the bristle tufts 16 and the bristle tuft holding member 17 made of a resin for supporting them. The bristle tuft holding member 17 has a tightening part 18 on the lower end side, a positioning part 19 on the inner side, an intermediate part 21 having a threaded groove, and an upper side part 22, and a through-hole 23 is provided on one part of the outer peripheral surface of the upper side part 22. By inserting the small brush part 15 from the upper end side in a state of housing a resin 25 for adhesion to the attaching hole 12 of the handle part 11, it is inserted until the positioning part 19 abuts on the periphery of the opening of the attaching hole 12, and threadedly engaged to the hardened resin 25.